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UNITED terns ATENT Grinch.

JOHAN M. ANDERSEN, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF I TOALBERT ANDERSON, OF SAME PLACE.

TROLLEY-WIRE HANGER.

SPECIFICATION forming part of Letters Patent No. 529,058, dated November13,1 894.

Application filed July 19,1894. Serial No. 517,989. (No model.)

To aZZ whom it may concern.-

Be it known that I, J OHAN M. ANDERSEN, residing in Boston, in thecounty of Suffolk and State of Massachusetts, have invented an IImprovement in Trolley-VVire Hangers, of which the followingdescription, in connection with the accompanying drawings, is aspecifi-' cation, likeletters and figures on the drawings representinglike parts.

This invention relates to trolley-wire hangers, and is embodied inahanger of that class employed to suspend the trolley wire from beneathbridges and like structures extended over the roadway, and has for itsobject to provide a more efiicient hanger for the purpose specified.These trolley-wire hangers of the class referred to, as now commonlyconstructed, consist of an insulator movable in and out of a metalsocket, which, as now constructed,

is closed at its top, and open at its bottom for the reception of theinsulator, the latter being retained in its socket by a cross bar orplatebolted to the bottom or under side of the said socket and providedwith an opening through which the insulator is extended. Trolley-wirehangers of the class referred to,

are defective, in that the insulator is liable to become worn or chafedoff by the reciprocating movement of the insultator through the 0 crossbar or plate, which practically forms the bottom of the said socket, andthey are further defective in that, the insulator is free to be turnedor rotated in its socket, which in practice is objectionable, as theinsulator is 3 5 liable to unscrew or work loose from the clip or carholding the trolley-wire.

My present invention has for its object to provide a trolley-wire hangerin which the above defects are avoided, and I accomplish c the desiredresult by a novel construction of hanger as will be described.

Figure 1 represents in section and elevation a trolley-wire hangerembodying this invention, and Fig. 2, a horizontal section of the hangeron the line 2-2, Fig. 1.

In accordance with this invention, the socket A is preferably made asherein shown, it consisting of a body portion or preferably tubular inform and provided at one end,

which will be hereinafter referred to as the lower end, with an inwardlyprojecting flange a of the same shape as the body portion a, whichflange forms an opening a for the passage through it of the shank orstem of the insulator A.

The tubular body portion a of the socket A is made of larger diameter atits upper end as at a to form a shoulder 0. upon which rests a removablecap, cover, or end piece a which may and preferably will be secured tothe body portion by bending over upon the said cap, the enlargedextension 00 of the body portion a, as shown in Fig. 1, the normalposition of the enlarged portion a being indicated by dottedlines insaid figure. The body portion a, at its lower end,is provided with anexternal flange a having projecting arms a a provided with suitableholes for the reception of fastening devices, herein shown as bolts a aand the said external flange is provided on its under side with adepending preferably inclined flange or skirt a to shed the moisture andprotect theinsulator from rain due.

The socket A before having its top or upper end closed by the cap ahasinserted into it an insulator A, which may and preferably will bemade of the construction herein shown, it consisting essentially of ametal rod 1) provided at its upper end with an enlarged head I) andhaving at its lower end a collar or flange b beyond which the saidrod 1) is preferably provided with screw threads as indicated by thedotted lines 19 in Fig. 1. The metal rod b and its head I) are incasedwithin a mass b of insulating material, which in practice is preferablymolded upon the said rod and head, the insulated rod b forming the shankor stem of the insulator. The insulating material 17 is shaped tocorrespond to the form of the rod 1) and its head I), and in accordancewith this invention, the insulating material is protected againstcontact with the metal surface of the socket by means of a metal sleeve17 consisting of two parts 2, 3 preferably integral with each other, the5 part 2 being of larger diameter than the part 3 and inclosing theinsulatingmaterial about the metal head I), and the part 3 being made ofsuch diameter as to readily permit it to pass through the opening 0. thepart 3 being too made of such length as to cover the desired portlon ofthe insulating material surroundmg the metal rod 1) to protect the sameagainst contact with the flange a of the socket, when the insulator isin operative position. The metal part 3 does not cover the entire lengthof the shank or stem of the insulator, but leaves a portion of theinsulating materialnear the collar or flange b on the said shankuncovered, so as to prevent any possible danger of the current jumpingfrom the flange b to the metal part 3 and thence to the socket A. Inother words, the part 3 of the metal sleeve does not cover the lowerportion of the insulating material enveloping the rod 12, in order thatthe insulating property of the hanger may be preserved.

In practice, it has been found desirable to provide the insulator with ayielding movement within its socket, so as to avoid destructive actionto the trolley wheel and the trolley wire, when the trolley wheel passesbeneath the hanger, and this is provided for by placing within thesocket A preferably two springs c c, the spring 0 being interposedbetween the cap a and the washer a, which may and preferably will be ofinsulating material, and which serves to protect the upper end portionof the insulating material I) from cutting action by the spring 0, andthe spring a encircles the part 3 of the metal sleeve 1), it bearingagainst the under side of the part 2 of the metal sleeve If and theinternal flange a.

The metal bolt or rod 1) of the insulator, in practice, has secured toit a trolley wire clip, which may be of any usual or suitableconstruction, but which in the present instance is shown as ofsubstantially the same construction as that shown and described inanother application, Serial No. 516,890, flled by me July 9, 1894, itconsisting of a metallic body portion (I provided atits opposite endswith spring arms (1' and having a substantially U-shaped piece d passedunderneath the trolley wire d and secured to the opposite sides of thebody portion d as by cars or looking fingers d, which project throughslots in the sides of the U-shaped piece (P. The spring arms (Z of theclip are forced into engagement with the upper surface of the trolleywire (1 by clamping bolt-s (Z''. The body portion d of the clip is shownas provided with an enlargement or boss d having a threaded socketadapted to be screwed upon the threaded end of the bar Z).

It is desirable in practice after the trolleywire has been screwed tothe bridge, insulator to prevent thcsaid insulator frombeingturned orrotated in its socket, in order to preserve the trolley wire in astraight line and prevent the said trolley wire being detached from itsinsulator, by the insulator unscrewing from the clip, which might becaused by the vibration of the trolley wire, as is liable in practice,and to accomplish this result, I have provided the part 3 of the metalsleeve b with longitudiceases nal flutes, ribs or projections d and haveprovided the annular flange a with a projection (Z of suitable shape tofit between two adjacent longitudinal ribs d as represented in Fig. 2,which projection c1 constitutes one form of locking device againstrotary action or movement of the insulator.

By means of the fluted or corrugated metal sleeve 3 and the projection(Z the insulator is maintained in its correct working position, and inorder to bring the insulator into its correct working position, theinsulator may be forced into its socket by hand until the fluted sleevehas been disengaged from the locking nose or projection (Z and when thusdisengaged, the insulator is free to be turned in its socket untilthe'trolley wire clip has been brought into its correct workingposition, after which the inward pressure upon the insulator may berelieved, and the spring 0 will force the insulator downward into itsnormal position, represented in Fig. 1, with the locking projection (Zin engagement with the proper fluted or longitudinal ribs on the metalpart 3 of the sleeve. The spring 0 acts as a yielding support for theinsulator and resists the downward action of the spring 0. In practice,it is usual to secure the hanger when applied to a bridge, to a woodentimber e by the bolts a a the said timber being provided with a suitableopening or hole 6 through which the metal socket is extended.

The timber e is secured beneath the bridge at such depth or distance aswill leave suflicient space below the floor of the bridge to permit thesocket A to be extended up through the timber e.

I have herein described the hanger as a bridge trolley hanger, and whileit is particularly adapted for such use, I do not desire to limit myinvention in this respect, as it may be used to advantage in otherplaces as a hanger for the trolley-wire. YVhen it is desired to removethe insulator from its socket, the cap a maybe removed by bending up therim a into the dotted line position shown in Fig. 1.

I claim- 1. A trolley Wire hanger comprising the followinginstrumentalities, vizz an insulator to which the trolley Wire issecured, a socket forthe reception of said insulator and in which thesaid insulator is capable of beingturned or rotated, a protective sleeveon the said insulator, and a locking device engaging the said sleevetoretain the insulator in its adjusted position within the socket,substantially as described.

2. A trolley wire hanger comprising the following instrumentalities,viz:-an insulator provided with an enlarged head and with a shank orstem of smaller area in cross section, a socket for the reception of thesaid insulator provided with a removable cap at one end and with aninwardlyprojecting flange at its other end forming an opening of lessarea than the head of the insulator and through which the IOC said shankor stem is extended, a protective sleeve fitted on the shank of theinsulator, and means to engage said sleeve, for the purpose specified.

3. A trolley-wire hanger comprising the following instrumentalities,viz:an insulator provided with an enlarged head and with a shank or stemof smaller area in cross section, a socket for the reception of the saidinsulator provided with a removable cap at one end and with an inwardlyprojecting flange at its other end forming an opening of less area thanthe head of the insulator and through which the said shank or stem isextended, a fluted protective sleeve fitted on the said shank or stem,and a projection on the said inwardly extended flange to engage thefluted sleeve, for the purpose specified.

4.. A trolley-wire hanger comprising the following instrument-alities,viz:an insulator to which the trolley-wire is secured, a socket forthereception of said insulatorand in which the said insulator is capable ofbeing rotated or turned, and means to engage the said insulator toprevent its being turned or rotated from its adjusted position,substantially as described.

5. A trolley-wire hanger comprising the following instrumentalities,vi'zz-an insulator to which the trolley-wire is secured, a metallicsocket in which the insulator is located and in which it is capable ofbeing rotated or turned and moved longitudinally, a metallic sleevefitted onsaid insulator and provided with longitudinal corrugations,ribs or projections, and means to engage said ribs or projections toprevent rotary movement of the insulator, and springs to act on theinsulator in opposite directions, substantially as described.

6. A trolley wire hanger comprising the following instrumentalities,vizz-an insulator to which the trolley-wire is secured consisting of ashank or stem and an enlarged head, a socket for the reception of thesaid insulator, consisting of a body portion provided with a removablecap at its upper end, an inwardly projecting flange at its lower endforming an opening through which the said shank or stem is extended anda depending flange on its under side, a fluted metallic sleeve on theoutside of the stem or shank of the insulator, a projection on theinwardly extended flange of the said socket to engage the said flutedsleeve, and springs within the said socket acting upon opposite sides ofthe head of the insulator, substantially as described.

7. A trolley-wire hanger comprising the following instrumentalities,viz:an insulator to which the trolley-wire is secured, a metallic socketin which the insulator is located and in which it is capable of beingrotated or turned and moved longitudinally, a metallic sleeve fitted onsaid insulator and provided with longitudinal corrugations, ribs orprojections, and a locking device to engage said sleeve, for the purposespecified.

8. In a trolley-wire hanger, the combination with an insulator to whichthe trolley wire s secured, a socket for the reception of the sa dinsulator and in which the said insulator 1s capable of a rotary andlongitudinal movement, and means to lock said insulator in adj ustedposition against rotary movement, for the purpose specified.

9. A trolley-wire hanger provided with a metal socket consisting of abody portion provided at its lower end with an internal flange from anopening a and normally open at its opposite or upper end, a cap or coverto close the said upper open end, arms extended from the lower end ofthe body portion and a depending skirt projecting below the said1nternal flange, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHAN M. ANDEnsEN.

Witnesses:

J AS. H. CHURCHILL, J. lVIURPHY.

